An apparatus is disclosed for use by a consumer in a non-medical setting that uses at least one low power optical radiation source in a suitable device that can be positioned over a treatment area for a substantial period of time or can be moved over the treatment area one or more times during each treatment. The apparatus can be moved over or applied to or near the consumer's skin surface as light or other electromagnetic radiation is applied to the skin. The apparatus may include an aperture that allows a user to, e.g., treat various skin contours and conditions, such as by attaching an adapter or using one of variously sized apertures contained on the apparatus.